“It’s hard to believe, but my students were among the first in the world to do it,” gushes middle school math teacher Cathy Yenca. “And after two test runs prior to testing day, there really weren’t ...
The first handheld graphing calculator, the Casio fx-7000G, appeared in 1985. Since then, graphing calculators have become a common — and controversial — tool for learning mathematics. These devices ...
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